PHOTO-ALPHA REACTIONS IN NUCLEAR EMULSIONS
Abstract
In experiments to search for new photonuclear reactions involving the emission of heavy particles 
, Ilford E1 emulsions were exposed to 240 roentgens of X radiation from the University of Saskatchewan betatron operating at energies up to 27 Mev. The plates were developed by a special "grain-gradation" technique which suppressed proton tracks and X-ray fog. The ejection of single α particles was observed from C13, N14, O16, Ag, and Br. Multiple-pronged stars were observed due to the photodisintegration of C12, N14, O16, and probably Ag or Br. Interpretations of these events were deduced, and cross section versus energy curves for many of them were obtained. Range–energy relationships were obtained for Be9, B10, and C12 particles in E1 emulsions.
, Ilford E1 emulsions were exposed to 240 roentgens of X radiation from the University of Saskatchewan betatron operating at energies up to 27 Mev. The plates were developed by a special "grain-gradation" technique which suppressed proton tracks and X-ray fog. The ejection of single α particles was observed from C13, N14, O16, Ag, and Br. Multiple-pronged stars were observed due to the photodisintegration of C12, N14, O16, and probably Ag or Br. Interpretations of these events were deduced, and cross section versus energy curves for many of them were obtained. Range–energy relationships were obtained for Be9, B10, and C12 particles in E1 emulsions.Résumé
non disponible
Get full access to this article
View all available purchase options and get full access to this article.
Information & Authors
Information
Published In
Canadian Journal of Physics
Volume 31 • Number 5 • July 1953
Pages: 723 - 757
History
Version of record online: 11 February 2011
Authors
Metrics & Citations
Metrics
Other Metrics
Citations
Cite As
C. H. Millar and A. G. W. Cameron. 1953. PHOTO-ALPHA REACTIONS IN NUCLEAR EMULSIONS. Canadian Journal of Physics.
31(5): 723-757. https://doi.org/10.1139/p53-068
Export Citations
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.
Cited by
1. Kinematic Calculation of the 16O(γ,4α) Reaction
2. On the mechanism of formation of excited states of the 8Be nucleus in the reaction 12C(γ, 3α)
3. 16O(γ, 4α) reaction mechanism investigation
4. Energy levels of light nuclei A = 13–15
5. Energy levels of light nuclei (VII). A = 5–10
6. PHOTOALPHA REACTIONS IN 12C AND 16O BELOW 17 MeV
7. 4Be
8. 6C
9. 8O
10. Photoalpha reactions below 21.5 MeV with 14N and 16O
11. Properties of the 12C(γ, 3α) reaction below 21.5 MeV
12. High-Resolution Study of the
B10(He3, p)C12
Reaction
13. Mechanism of the Reaction
O16+p→p+4α
at 29 Mev
14. Sur le mécanisme de la réaction 12C(γ, 3α) à 17,6 MeV
15. Section efficace de la réaction 12c(γ, 3α) à 14,8 et 17,6 MeV
16. Photoproduction of Alpha Particles from Several Metallic Elements
17. Study of the Interaction of Positive
K
Mesons
18. A SEARCH FOR α-PARTICLES FROM THE DECAY OF Bi209
19. The Reactions
12
C( , p)
11
B,
11
B(p, )
12
C and
12
C( , 3 ) at 17.63 MeV Excitation
20. THE PHOTODISINTEGRATION OF OXYGEN NUCLEI INTO FOUR ALPHA-PARTICLES
21. Absolute Cross Sections for Deuterons on Beryllium
22. Mechanism of the Reaction
C12+p→p+3α
at 29 Mev
23. XCV.
Cross sections for the reaction12
C(
γ
3
α
)
in the energy range
12–18
m
e
v
24. Photodisintegration of Carbon-12 by 330-Mev Bremsstrahlung
25. Energy Levels of Light Nuclei. V
26. Investigations on the reaction7Li(γ, α)3H
27. Yield of Alpha Particles from Photonuclear Reactions at 23-Mev Bremsstrahlung
View Options
Login options
Check if you access through your login credentials or your institution to get full access on this article.